THOR 250

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PRODUCT INFORMATION

Polini THOR 250 engine features a liquid cooling system, that grants an extraordinary steady power output and better performance at every rpm.
Thor 250 engine is small and very compact with a great power/weigh ratio.

The die cast light-alloy aluminium cylinder grants a better thermal stability. The liner with Nickel-Siliceous coating improves the piston sliding, its resistance to wear and abrasion. The piston, gravity cast at high silicon content light alloy, reduces thermal expansion and the coupling slack. The piston top design is specific to optimize the compression ratio. The advanced technology and the great performance of the new THOR 250 gives a better feeling when driving making the flight even more performing, dynamic, reactive, beside granting more stability.

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TECHNICAL FEATURES

Polini engine- 2 stroke monocylinder

Cooling- Liquid Cooled

Bore for stroke-72 x 60

Displacement- 244 cm3

Power- 36 HP

R.P.M.- 8,000

Cylinder- Aluminum with Gilnisil coating

Compression ratio- 11,5:1

Piston- Two chromium plated rings mm 1

Intake- Reed valve in the crankcase

Carburetor- Ø28 Bowl

Air filter- Air box

Ignition- Electronic with battery charger possible

Battery charger prearrangement-Output power 80 W at 5500 RPM

Spark plug hood- 5k Ω resistance

Fuel type- Lead free petrol with 2% synthetic oil

Gear reduction unit- Helical teeth in oil bath with 2,8 reduction ratio

Starter- Pull start with self winding cable Flash Starter – Electric starter (optional)

Clutch- Centrifugal in oil bath

Muffler- Expansion with oval silencer

Engine weight- 18 Kg (19kg with electric starter) without radiator.

Propeller rotation- Clockwise

EXPLODED VIEWS

THOR_250

THOR 250 DUAL SPARK

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PRODUCT INFORMATION

Polini THOR 250 DUAL SPARK engine features 2 spark plugs and 2 independent ignitions to grant the maximum safety standard in every condition of flight. The liquid cooling system grants an extraordinary steady power output and better performance at every rpm.

Many are the advanced technical solutions adopted.

  • The die cast light-alloy aluminium cylinder grants a better thermal stability.
  • The piston, gravity cast at high silicon content light alloy, reduces thermal expansion and the coupling slack. The piston top design is specific to optimize the compression ratio.
  • It is provided with a balancing countershaft; this feature cancels the vibrations and guarantees such a comfort when driving never felt during a flight and a better engine lasting. The counter revolving rollers considerably decrease the upsetting torque-steer for a further flight comfort.
More

TECHNICAL FEATURES

Polini engine- 2 stroke monocylinder

Cooling- Liquid Cooled

Bore for stroke-72 x 60

Displacement- 244 cm3

Power- 36 HP

R.P.M.- 8,000

Cylinder- Aluminum with Gilnisil coating

Compression ratio- 11,5:1

Piston- Two chromium plated rings mm 1

Intake- Reed valve in the crankcase

Carburetor- Ø28 Bowl

Air filter- Air box

Ignition 1- Electronic

Ignition 2- Electronic battery powered

Battery charger – Output power 80 W at 5500 RPM

Spark plug hood- 5k Ω resistance

Fuel type- Lead free petrol with 2% synthetic oil

Gear reduction unit- Helical teeth in oil bath with 2,8 reduction ratio

Starter- Electric starter + pull start with self winding rope Flash Starter

Clutch- Centrifugal in oil bath

Muffler- Expansion with oval silencer

Engine weight- 18,5 Kg (19,5 kg with electric starter) without radiator.

Propeller rotation- Clockwise

EXPLODED VIEWS

THOR_250_DS

WINGS & FLIGHTS

ABOUT
Wings and Flights operates from Pune, looking after flying training, import and supply of flying equipment.
ADDRESS
Tupe Nagar, Opposite suzlon, Sadesatranali, Hadapsar, Pune
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